Ghouliday

oh, this one... once you learn the lyrics it's hard not to sing along...

Napstablook

Ghouliday is the 40th track in the UNDERTALE Soundtrack. It is an arrangement of Jingle Bells, with all of the lyrics replaced with a "oo" sample. It is on the third CD found in Napstablook's house. The song continues playing after exiting their house. This (as well as Spooktune and Spookwave) can trigger an event where the protagonist encounters Aaron and Woshua, who are too scared to fight due to the spooky music. It consists of a single sample.

Mad Mew Mew sings the full lyrics of this song as "The 1000 Particle Subscriber Special" in the Dog Casino on the Xbox versions of Undertale. When this dialogue reappeared in the UNDERTALE 6th Anniversary Stream, this track played in full as an "ULTRA RARE" track with the title of Mew Mew's Super Secret Song.

Lyrics

The track does not feature traditional sung lyrics. Instead, the lyrics entirely consist of the same "ooo" sample.

English

ooo ooo oooo
ooo ooo oooo
oo oo ooo oo ooo

oo oo oo oo oo oo oo oo
oo oo oo oo ooo

ooo

Japanese

う〜う〜う〜
う〜う〜う〜
う〜う〜う〜〜う う〜

う〜う〜う〜う〜う〜う〜う〜う〜
う〜う〜う〜う〜う〜

う〜